package weekend01;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Random;

public class List03 {
    public static void main(String[] args) {
        Random rand = new Random();
        List<Integer> list = new ArrayList<>();
        for (int i = 0; i < 10; i++) {
            list.add(rand.nextInt(100));
        }
        System.out.println("list原始数据:"+list);//无序

        Collections.sort(list);
        System.out.println("list排序后的数据:"+list);

        Collections.reverse(list);
        System.out.println("list翻转后的数据是:"+list);
        System.out.println("list第一个元素是:"+list.get(0));
    }
}
